Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

19 hosts · 263 ms

Download CSV
HostCertsFirst seenLast seen
scfederal.org 3 2025-09-30 2026-06-25
hybrid.scfederal.org 1 2026-06-25 2026-06-25
www.hybrid.scfederal.org 1 2026-06-25 2026-06-25
loans-ld.scfederal.org 3 2025-09-01 2026-07-03
www.loans-ld.scfederal.org 3 2025-09-01 2026-07-03
staging.scfederal.org 10 2026-06-07 2026-10-03
mgr-staging.scfederal.org 10 2026-06-07 2026-10-03
marketing.scfederal.org 14 2026-05-16 2026-09-11
mi.scfederal.org 2 2025-10-19 2026-09-19
webmail.scfederal.org 2 2025-09-30 2026-06-25
securemail.scfederal.org 1 2025-11-13 2025-11-13
autodiscover.scfederal.org 2 2025-09-30 2026-06-25
mgr.scfederal.org 13 2026-06-08 2026-10-04
vas.scfederal.org 2 2025-11-03 2026-09-21
branchsuiteservices.scfederal.org 2 2025-10-30 2025-10-30
www.branchsuiteservices.scfederal.org 2 2025-10-30 2025-10-30
clicks.scfederal.org 13 2026-06-07 2026-10-03
www.scfederal.org 1 2026-06-08 2026-06-08
legacy.scfederal.org 1 2025-09-30 2025-09-30

Programmatic access: API GET /v1/hosts/scfederal.org (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/scfederal.org.